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cond-mat.mes-hall2000
Quantum state engineering with Josephson-junction devices
Yuriy Makhlin, Gerd Schoen, Alexander Shnirman
We review recent theoretical and experimental progress in quantum state engineering with Josephson junction devices. The concepts of quantum computing have stimulated an increased…
quant-ph2000
Nonlocal properties of two-qubit gates and mixed states and optimization of quantum computations
Yuriy Makhlin
Entanglement of two parts of a quantum system is a non-local property unaffected by local manipulations of these parts. It is described by quantities invariant under local unitary…
cond-mat.mes-hall2000
Statistics and noise in a quantum measurement process
Yuriy Makhlin, Gerd Schoen, Alexander Shnirman
The quantum measurement process by a single-electron transistor or a quantum point contact coupled to a quantum bit is studied. We find a unified description of the statistics of t…